Note 17 - Earnings Per Share (Details) - Components Of Basic And Diluted Net Income Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended												4 Months Ended				12 Months Ended
	May 08, 2013		Feb. 13, 2013		Nov. 21, 2012		May 09, 2012		Feb. 15, 2012		Nov. 23, 2011		Aug. 31, 2013		Aug. 29, 2012		Aug. 28, 2013		Aug. 29, 2012		Aug. 31, 2011
Numerator:
Income from continuing operations (in Dollars)	$ 2,612	[1],[2]	$ 603	[1],[2]	$ 217	[1],[2]	$ 2,499	[1],[2]	$ 1,357	[1],[2]	$ 571	[1],[2]	$ 790	[1],[2]	$ 3,187	[1],[2]	$ 4,222		$ 7,613		$ 2,800
Net income (in Dollars)	$ 2,494	[1]	$ 203	[1]	$ 129	[1]	$ 2,423	[1]	$ 1,088	[1]	$ 204	[1]	$ 459	[1]	$ 3,141	[1]	$ 3,285		$ 6,854		$ 2,965
Denominator:
Denominator for basic earnings per share—weighted-average shares (in Shares)																	28,618		28,351		28,237
Effect of potentially dilutive securities:
Employee and non-employee stock options (in Shares)																	248		78		60
Denominator for earnings per share assuming dilution (in Shares)																	28,866		28,429		28,297
Income from continuing operations:
Basic																	$ 0.15		$ 0.27		$ 0.09
Assuming dilution (a)																	$ 0.15	[3]	$ 0.27	[3]	$ 0.09	[3]
Net income per share:
Basic	$ 0.09	[1]	$ 0.01	[1]	$ 0.01	[1]	$ 0.09	[1]	$ 0.04	[1]	$ 0.01	[1]	$ 0.02	[1]	$ 0.11	[1]	$ 0.11		$ 0.24		$ 0.10
Assuming dilution (a)	$ 0.09	[1]	$ 0.01	[1]	$ 0.01	[1]	$ 0.09	[1]	$ 0.04	[1]	$ 0.01	[1]	$ 0.02	[1]	$ 0.11	[1]	$ 0.11	[3]	$ 0.24	[3]	$ 0.10	[3]

[1] The quarters ended August 28, 2013 and August 29, 2012 consists of four four-week periods. All other quarters presented represent three four-week periods.

[2] The first quarter encompasses the typical start of school and second quarter includes Christmas and Thanksgiving holidays.

[3] Potentially dilutive shares not included in the computation of net income per share because to do so would have been antidilutive amounted to zero shares in fiscal year 2013, fiscal year 2012 and fiscal year 2011. Additionally, stock options with exercise prices exceeding market close prices that were excluded from the computation of net income per share amounted to 67,000 shares in fiscal year 2013, 373,020 shares in fiscal year 2012 and 1,043,000 shares in fiscal year 2011.